Dealer Signup Information. The 37th National Sports Collectors Convention will be held August 3-August 7, 2016 at the Atlantic City, NJ Convention Center. A limited number of dealer booths are currently still available.ealer Signup Information. The 37th National Sports Collectors Convention will be held August 3-August 7, 2016 at the Atlantic City, NJ Convention Center. A limited number of dealer booths are currently still available.
Carbon has by definition 6 protons. However, its many isotopes can have anywhere from 2 neutrons to 16 neutrons, with 6 neutrons being the most common (~95% of all carbon). Carbon has by definition <b>6 protons</b>.
Carbon also has a range of isotopes which include a 6-neutron, 7-neutron and 8-neutron isotope. These three carbon isotopes are called carbon-12, carbon-13 and carbon-14, respectively. The atomic mass of each of these isotopes is derived by adding the number of neutrons in each isotope to the number of protons. The atomic mass of carbon-14, for example, is 14, because 6 protons plus 8 neutrons equals an atomic mass of 14.